OK, So I have a 02 ZX5 144K miles I love this car, but it has recently been a headache. I have replace all window regulators aftermarket. Then 3 mths. later the drivers window stop working the airbag light stays on always and the seat belt warning light with a very audible ding goes on for about 10 min. I tried to put a code scanner to the car but everything comes back no codes. I assume there is a short somewhere. Could the airbags and seat belt be connected somewhere? What about the window? To anyone who answers this thank you. I just want to cut the dinging.Which wire to the ECU will do this? This is enough for sane person to check into the loony bin.

Edward, welcome to FF!
In my experience, air bag codes can not be read with a standard OBD II scanner. And, yes, both the seat belts (buckles and pre-tensioners) and the airbags are part of the SRS (Supplemental Restraint System which has its own control module, located beneath the center console. When the airbag light is on, the entire SRS is disabled, therefore, no airbags, no pre-tensioners, or anything else which is part of the SRS.
I think it unlikely that the window regulators are connected to the SRS, except, as you surmise, by a wiring short. Good Luck.

-check fuse F60 (7.5amp) behind dash on left side near your left knee. That powers the module under the console. There is also a ground wire down there for the other side of the power circuit.

-The "clockspring" in your steering column will throw airbag warning light if it has gone bad. It is a thin printed circuit on flexible film, it's appearance is like a wound clock spring.

-There are sensors to see if you are sitting in the seats
-There are sensors to see where the seat position is
-There are sensors to see if the belts are buckled
-There are wires going to the seatbelt tensioners

(if any of those sensors is disconnected or has a broken wire, warning light will come on)

Register Now

In order to be able to post messages on the Ford Focus Forum, Ford Focus ST Forum, Ford Focus RS Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:

Password

Please enter a password for your user account. Note that passwords are case-sensitive.

Password:

Confirm Password:

Email Address

Please enter a valid email address for yourself.

Email Address:

Log-in

User Name

Remember Me?

Password

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.

Focus Fanatics Ford Focus Forum offers many fun ways for you to engage with other Ford Focus Owners from across the world. Whether it be about the aftermarket performance modifications, technical how-to's, European tuned suspension or awesome fuel economy similar to the Audi S3, Ford Fusion and Acura TLX. You can find all Ford Focus and Focus ST related information here. Join our Ford Focus discussion forums and chat with local Focus enthusiasts in your area. Challenger Hellcat - Charger Hellcat